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World SteelBuilding trust, Assuring success

הנדסת הגנה מאש · מאמר 8 מתוך 10

Factory vs site application of intumescent coatings

Applying intumescent coating in the fabrication shop or on site: quality, programme, transport, damage, touch-up and cost compared – and how to combine both.

צוות ההנדסה של World Steel · עודכן 2026-10-16 · 2 דקות קריאה

Painting shop

Shop application

In the shop, members are blasted, primed and coated under controlled conditions, turned for the best spray position and measured before dispatch. Fire protection runs in parallel with site works, not after erection.

  • Consistent quality and thickness control.
  • No scaffolds or lifts for coating.
  • Shorter site programme.

Site application

  • No transport or handling damage to the coating.
  • Flexible where the design is still changing.
  • Depends on weather, access and site labour.

Managing transport and erection

  • Choose a product suitable for off-site application and handling.
  • Pack with soft supports, protect lifting points.
  • Leave connections uncoated where bolts and site welds are made, then complete them on site with the same system.
  • Agree the touch-up procedure in the ITP.

The touch-up must use the same product and achieve the scheduled thickness – it is part of the certified system.

FAQ

Is factory-applied intumescent more expensive?

Usually it is cheaper overall: application is more efficient and site costs are lower, even after allowing for packing and touch-up.

צריכים את העובי והעלות לפרויקט שלכם?שלחו את רשימת האלמנטים ודירוגי האש – המהנדסים שלנו יכינו הצעה להגנה מאש.
בקשת הצעה

Preliminary calculations are provided for estimation purposes only. Final coating thickness and fire protection system selection must be verified against the approved product documentation, applicable project requirements and relevant engineering assessments.

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